Alexander caldwell



(No Model.)

A. CALDWELL. GAS LLULAToR. No. 340,696. Patented A131127, 1886.

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UNITED STATES ALEXANDER CALDVELL, OF NE\V YORK, N. Y.

GAS-REGULATOR.

SPE-GEEICATION forming part o Letters Patent No. 340,696. dated April 27, 1886.

Application filed March 11, 1886. Serial No. 194,901. (Xo model.)

To @ZZ whom it may concern,.-

Be it k nown that i, ALEXANDER CA LDWELT., of the city, county, and State of l\'e\v York, have invented a new and useful Improvement in Gas-Regulators; and I do hereby declare that the following is a i'ull and exact description thereof, reference being had to the accompanying drawings, and to the letters ot' reference marked thereon, making a part of this specitication. in which- Figure l is a diametric section of my improved gasregulator in line w w of Fig. 2. illustrating the device in operation. Fig. 2 is a cross-setaon in line wx ot- Fig. l, illustrating the device with the sponge removed and the plug screwed down to its lull extent. to serve as a stop valve. Fig. 3 is a cross-section in line y y of Fig. 1, illustrating the retainingbars introduced to conline the sponge within the regulatingchamber. Fig. 4 is a section on line z z of Fig. 2. and Fig. 5 is a sectional view of the device when constructed with an enlarged regulating-chamber and with the plug wholly iuclosrd therein.

My invention relates te that class of gas` pressure regulators in which the tlow of gas is checked and retarded more or less in its passage to the burners by t'rictional devices. and has for its object to furnish a simple device for the purpose at a low cost.

My invention consists, mainly, in the combination, with the gassupply pipe, ot' a sponge or other equivalent cellular or librous body placed in the pipe and aweight or screw pressing down upon the sponge to close and condense the same more or less, in proportion to the pressure ofthe gas in the pipe, so as to properly retard its How through the sponge.

ln the accompanying drawings, A represents a casing ot' metal encircling a cylindri cal chamber, B, whose internal diameter exceeds the external diameter of the pipes C C, through which the supply of gas to -be regulated is delivered. rlhis casing is formed with threaded openings D D at or near the bottom ot' the chamber B, into which the ends ofthe gas-pipes G C may be screwed at right angles to the length of the chamber, (sec Fig. 1,) so

as to include the lower end ol' said chamber in the conduit formed by said pipes.

The chamber B is internally threaded, and a threaded plug, E, is fitted to screw down therein. as shown in. Fig. 2, the plug being made long enough to completely cover and close the openings D-D when screwed l'ully down into theI chamber. The top ol' the chamber is closed by a cap, F. screwingl down tightly thereon, and is made Yaas tight by a. suitable gasket. Gr. interposed in the joint. The upper end ot' the stormt-plug l is extended in the l'orm of a stem. E', which is carried through a gland or shifting-box, H. formed centrally in the cap F. and terminates in a milled l -ad or thumb-piece, I, by means whereof the screw-plug may be turned up 0r down in its chamber.

K K (see Fig. 3) represent. cross-bars, which are inserted in the openings for the pipes'C C before the latter are screwed up therein.

L, Fig. l, is a sponge placed within the chamber under the plug E, so as to completely fill the space therein between the two pipes C C; 0|'. as an equivalent. for the sponge. a body of cotton, wool, or other elastic. cellular, or librous material may be inserted in the chainber lo retard the tlow ol' gas.

Instead of forming or lit ting the plug E with a stem, E', to extend out. through a gland, H,

it may simply be l'ormed with a lug or head, M, to be completely inclosed within the chainber, as shown in Fig. 5, and I contemplate also dispensing entirely with the threads upon the plug and allowing the same to bear upon the sponge with the pressure due to its weight or to a spring interposed between its upper end and the top olthe chamber, or by other4 wise making it lit so closely as to permit ot' its retaining its position when pressed down to the required extent by mere frictional contact with the sides ol' the chamber.

The cellular body of the sponge L or equivalent material will not only serve to` retard more or less, as required, the flow of the gas, but will operate as a filter to arrest impurities therein.

In the use of my device the regulator is connected ou each side with the servicepipes C C, so as to l'orm in connection'therewith a continuous conduit. A. body of sponge or other equivalent cellular or lihrous material, L, is then placed Within the chamber' between the ends of the pipes C C, and is compressed by screwing or forcing down the plug E upon the sponge until the oW of gas at the burners is so regulated as to prevent an undue escape thereof in excess of the amount required to produce a proper degree of illumination, and which may be properly consumed at the burner.

When the sponge becomes choked, it may be readily removed and replaced by a fresh charge, and its density at any time is easily regulated to control and adjust the flow of gas through it by a movement of the plug E.

When it is desired to cut off Wholly the supply of gas, it may be done by removing the charge of sponge and forcing the plug down completely in its seat, as shown in Fig. 2.

I claim as my invention* l. The combination, with a pipe or conduit for gas and a plug traversing the opening therein, of a cellular or iibrous mass intertwo subscribing witnesses.

ALEXANDER CALDWELL.

Vitnesscs:

J. F. AoKER, Jr., S. M. MADDEN. 

